Moly-coated bullets; pressure/velocity?

Robert Foote · November 20, 1999, 10:48 PM

A friend of mine who is even more computer challenged than I requested that I inquire about moly-coated bullets in .30 cal, for use in a M700 bolt action. He has the impression that if these bullets (say 180 gr.) generate less barrel friction and pressure then a given load could be bumped up a certain percentage and all would be well. I am skeptical and advised that of course this is a rifle-specific issue. I am also skeptical that the effort is worth making. Comments/opinions solicited as this is an issue I am not familiar with. Thank you.

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WalterGAII · November 20, 1999, 11:10 PM

He's right, except that there's no formula for computing the correct increase. You just have to start anew and work your loads up. I use a chrony, when working up new loads. I don't shoot anything but moly bullets in my rifles now.

flatlander · November 21, 1999, 11:40 PM

I've become a moly convert myself, the main reason being that I shoot High Power, practice regularly, and hate spending more time cleaning my rifle than I did getting it dirty in the first place. Moly coated bullets have cut my bore cleaning time by more than half. I broke in the Douglas SS barrel in my AR SR with moly'd bullets and have shot nothing but moly'd bullets through it - just over 4500 of them to date. I use Kroil/Shooter's Choice mixed 50/50, with RemClean every 300 rounds or so. The rifle will still hold the 10-ring at 600yds with good loads, when I do my part.

November 20, 1999, 10:48 PM	#1
Robert Foote Senior Member Join Date: December 31, 1998 Posts: 623	A friend of mine who is even more computer challenged than I requested that I inquire about moly-coated bullets in .30 cal, for use in a M700 bolt action. He has the impression that if these bullets (say 180 gr.) generate less barrel friction and pressure then a given load could be bumped up a certain percentage and all would be well. I am skeptical and advised that of course this is a rifle-specific issue. I am also skeptical that the effort is worth making. Comments/opinions solicited as this is an issue I am not familiar with. Thank you. ------------------

November 20, 1999, 11:10 PM	#2
WalterGAII Junior member Join Date: November 7, 1999 Posts: 1,516	He's right, except that there's no formula for computing the correct increase. You just have to start anew and work your loads up. I use a chrony, when working up new loads. I don't shoot anything but moly bullets in my rifles now.

November 21, 1999, 11:40 PM	#3
flatlander Senior Member Join Date: June 17, 1999 Posts: 120	I've become a moly convert myself, the main reason being that I shoot High Power, practice regularly, and hate spending more time cleaning my rifle than I did getting it dirty in the first place. Moly coated bullets have cut my bore cleaning time by more than half. I broke in the Douglas SS barrel in my AR SR with moly'd bullets and have shot nothing but moly'd bullets through it - just over 4500 of them to date. I use Kroil/Shooter's Choice mixed 50/50, with RemClean every 300 rounds or so. The rifle will still hold the 10-ring at 600yds with good loads, when I do my part.